Car truck bolster



Sept. l, 1931. H. n. TAYLOR CAR TRUCK BOLSTER Filed Feb. 14, 195o Patented Sept. 1, 1931 UNITED vs'rnrrs PArsNr erica ..PIOW'ARD D. TAYLOR, OF NEW YORK, N. Y., ASSIGNOR TO FLEXEBLE TRUCK CORPORA- TION, OF READING, PENNSYLVANIA, A CORPORATION OF DELAWARE CAR TRUCK BOLSTER Application filed February 14, 1930. Serial No. 428,255.

, rproved construction use in trucks,

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The invention vrelates to bolsters for railway car trucks and seeks to provide an imparticularly adapted for such as set forth in prior Letters Patent of the United States Nos. 1,594,- 576 and 1,594,645, issued vto me August 3, 1926. i The invention Consists in the features of improvement hereinafter set forth, illustrated in the accompanying drawings and more particularly pointed out in the appended claims.

In the drawings:

. Fig'. 1 is a side elevation of the truck with the improved bolster applied thereto.

Fig.`2 is a. view of the bolster partly in plan and partly in horizontal section onthe 'line 2 2 of Fig. 3.

Fig. 3 is a View ofthe bolster partly in side elevation and partly in vertical section on Vthe line 3-3 yof Fig. 2.

n Fig.V 4 is an end view,-and v Figs. 5 and 6 are transverse sections on the lines 5 5 and 6---6 of Figs. 2 and 8. y As set forth in the prior patents referred to, the truck side frames a are provided with largebearing openings at their central portionswithin which carrier rings o are journaled, ythe rings being provided with openings toV receive the ends of the bolster c and spring plank d, andthe interposed springs he rings on opposite sides of the truck are Yinterloeked with the bolster ends by means of columnguide lugs 1,0 at opposite sides of each ring and pairs of co-operating lugs 12 on opposite sidesof each end of the bolster. Each ring is also interlocked with the side frame in which it is journaled by means of keys 13, but, in a manner permitting the limited rockingV movement of the side frames.

The bolster is preferably formed of a single integral casting and comprises top and bottom walls 14 and 15 and oppositeside walls 16. The end portions of the bolster l. which extend within the upper portions of the openings of the carrier rings o are of contracted height, and the corresponding portions 17 of the top wallof the bolster are arched in section, while the bottom walls 15 are inclined-upwardly from the central porthe opposite edges of tion of the bolster and terminate in substantially horizontal spring-engaging portions or seats 18. A

To stilfen the bolster without contracting the space required for the bolster springs, the side walls 16 extend downwardly below the inclined portions of the bottom Wall and below the spring seats and provide strengthening flanges 19, and the latter are connected at the inner ends of the spring seats by transverse depending flanges 20. The portions of the top wall adjacent the arched ends 17 thereof are preferably thickened and provided with horizontal upper surfaces to provide seats 21 for the side bearings. To further stiften the end po-rtions of the bolster, the portions 17 and 21 of the top wall 14 are connected to the adjacent parts of the bottom wall by vertically disposed stiifening ribs or Walls 22 extending longitudinally ot the bolster midway between the side walls thereof and which, in the form shown, are provided with core openings. Also, in the form shown, the flanges 19 and nected by stiflening fillets 23 which'are cut away at intervals to accommodate the bolster springs. Preferably, also, the extreme ends of 1 he arched portions 17 and the spring seats 18 are provided with transverse stiftening beads 24 and 25. The top wall is provided with the usual central bearing portion 26 and the central portions of the top and bottom walls below the hearing are connected by vertical walls 27 which are strengthened by bracing ribs 28.

Between the center of the bolster and the end portions 17 of the top wall, the top, bottom and side walls form a structure which is substantially rectangular in cross-section. That is to say, except at its arched ends, the top wall is fiat and horizontal in transverse direction, and except opposite the arched end portions 17, the side walls extend throughout the height of the bolster and merge into the top wall substantially at right angles. rl`liis rectangular box section forms a bolster of stout construction, particularly at the central and side bearing portions thereof. To avoid abrupt angular portions between the flat and arched parts ofV the spring seats 18 are conthe top wall, the latter, at points intermediate the arched'ends 17 and the side bearing seatsQl, is provided with triangular sections 29 which are conveXly curved in transverse direction and concavely curved longitudinally oi' the bolster and merge into the arched end portions 17 ot' the top wall. 1t is noted that the upper portion ot the arched end 17 and the side bearing seats 21 are in substantial alignment with one another and with the other portions of the top wall oi' the bolster, so that there are no abrupt angular portions or offsets in the upper wall or compressionV member ot the bolster.

Intermediate the center and end portions of the bolster, the top and bottom walls are provided with core openings 30 andthe walls labout these openings are sti'l'ened, preterably by thickening the central portions thereof, as shown in Fig. 6.

Changes may be lmade and described without departure 'from scope oithe appended claims.

l claim as my invention:

1. A car-truck bolster comprising top, bottom, and opposite side walls, the top wall having arched end portions, and said walls otherwise forming a structure substantially rectangular in cross section, substantially as in the details shown i me .s described.

2. A cast truck bolster having top, bottom and opposite side walls, the topV wall having arched end sections but otherwise and ythroughout the greater part of its length merging into the upper edges of said side walls substantially at right angles thereto and the upper portions of the arched ends being in substantial alignment with the other portions 'of the top wall, substantially as described.

3. A cast truck bolster having contracted ends and comprising aV top wall having arched ends, a bottom wall inclined upward ly from the center of the bolster andtermi- I nating in spring seats, and opposite vertical side walls ot contracted height oppositey said arched ends and spring seats but otherwise extending substantially throughout the height of the bolster, substantially as de-y scribed.

4. A cast truck bolster having contracted ends and comprising a top wall having' larched ends, a bottom wall inclined upward- Y ly from the center ofthe bolster and termi- 5 Dating in spring seats, and' opposite vertical side walls of contracted height opposite said Varched ends and spring seats but otherwise 4extending substantially throughout the height ot the bolster, and kthe side walls` forming stitening flanges depending below the inclined and the spring seat portions of the bottom wall, substantially as described.

5. A cast truck bolster comprising a top wall having flat side-bearing seats adjacent its ends and being substantially horizontal in section at and between said seats and of arched sectionat its ends outside of said seats, vertical side Walls depending from the edges ot the top wall and a bottom wall disposed above the lower edges of said side walls throughout the greater portion of its length and terminating in spring seats below the arched ends of the top wall, and vertical, longitudinal, stiitening walls extending between the arched ends and seats of the top wall and the adjacent portions of the bottoni wall, substantially as described.

6. A casttruck bolster comprising top,

bottom and oppositel vertical side walls, the

top wall having side-bearing seats and a substantially flat upper surface at and between said seats and being arched in section at its ends outside otsaid seats and the upper portions ot the arched ends and said seats being in substantial alignment with the other portions of the top wall, substantially as described. i Y

7. A cast truck bolster comprising top, bottom and opposite vertical side walls, the top wall having side-bearing seats and a substantially iiat upper surface at and between said seats and being arched in section at its ends outside of said seats, the upper portions of the arched ends and said seats being in substantial alignment with the other portions of the top wall, and said top wall having curved portions at the outer edges of the seats that merge into the arched ends, substantially as described.

8. A cast truck bolster comprising top, bottom and side walls, the top wall having side-bearing seats and being substantially horizontal throughout the width of the bolster at and between said seats and arched in section at its ends outside of said seats, and the top wall having triangular curved portions at the outer edges ot the seats that merge into the arched end sections, substantially as described.

9. A cast truck bolster comprising top,

ieu

bottom and opposite vertical side walls, the

top wall `having side-bearing seats and arched ends outside of said seats, and said vertical side walls, at andbetween'said seats, extending substantially throughout *the height ot the bolster, substantially asV described.

10. A east truclr bolster comprising top,

kbottom and opposite vertical Yside walls, the top wallV havingV side-bearingseats and L o arched ends outside'oi1 said seats, the bottom wall being inclined upwardly from the center of the bolster and terminating in spring seats, and said vertical side walls extending below the inclined portionsvand the spring seats of the bottom wall, and extending substantially throughout the height of the bolster at and between the side-bearing seats, substantially as described. Y Y HOWARDy D. TAYLGR. 

